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Gas and dust permeating space put pressure on a galaxy as it moves. This resistance, called ram pressure, can strip a galaxy of its star-forming gas and dust, reducing or even stopping the creation of new stars. However, ram pressure can also compress gas in other parts of the galaxy, which can drive star formation. This may be happening in IC 3476. The galaxy appears to have absolutely no star formation along its edges, which are most affected by ram pressure, but rates of star formation deeper within the galaxy are noticeably higher. to the average.
